Guilherme Costa Marques

Braga

Born in Três Rios, Brazil, Guilherme began playing futsal and trained at a football school, having started out playing in the streets. He started out playing in five-a-side before switching to eleven-a-side. As Guilherme grew older, he began to take football seriously. Guilherme then started out his career at Paraíba do Sul before moving to Portugal, where he joined Braga in 2009 at age sixteen. Immediately after joining the club, Guilherme was assigned to the youth team. Guilherme made his SC Braga first team debut on 24 January 2010, starting the whole game, in a 4–1 win over Leiria. He also appeared as an unused substitute in a league match against Vitória on 6 March 2010. For the remaining part of the 2009–10 season, Guilherme appeared in a number of matches as an unused substitute, as he made one appearance for the side. Ahead of the 2010–11 season, Guilherme was promoted to Braga's senior squad. His first appearance of the season came on 21 August 2010, coming on as a second–half substitute, in a 0–0 draw against Vitória. On 22 January 2011, he scored his first goal of the season, in a 2–2 draw against Vitória. Eight days later, on 30 January 2011, Guilherme scored again in the third round of Taça da Liga, in a 4–0 win over Arouca. At the end of the 2010–11 season, he went on to make eight appearances and scoring once in all competitions. During the season, Guilherme was linked a move away from SC Braga, as Juventus, Manchester City and FC Barcelona were…

Guilherme plays in an offensive midfielder and prefers to play in the middle position. Goal.com said about Guilherme, commenting: "he's a Brazilian of great creativity and imagination, able to make himself valuable for his team with a play of class or a winning assist for his teammate". During his early career at Legia Warsaw, Guilherme also played in the left–back position, reflecting: "At this point I focus on the left defense, because I'm needed there. Therefore, I listen to many comments, watch matches, analyzing the players' play in this position. For sure, the fact that I'm doing so well on left defense is caused by the help of the training staff. There really was no conversation with the trainer about the game on the left defense."

As of match played 6 December 2025

Guilherme mentioned in an interview with Gol 24 that he has a wife, implying that he's married. During the same interview, he's currently learning Polish and spoke English and occasionally Portuguese when he was at Legia Warsaw. Having spent four years in Poland, he applied for the Polish Citizenship to help the club reduce the limit of foreigners in the league. In February 2018, Guilherme became a first time father. Growing up in Três Rios, Brazil, Guilherme revealed that he stayed all day on the pitch that "sometime his mother came for me because I forgot about the dinner". Although he described his mother as "strict", due to the fact that "she did not always like that him spending so much time playing football" and "demanding", she, nevertheless, supported him. He also grew up supporting Flamengo. He also have a tattoo that said: "Minha Família é minha vida" (translated "My family is my life") in his right arm. Guilherme also has a brother.